Velilla 103035X GRS V.Dynamix trousers: the technical model of the 4-Xtreme Max range
This is the most advanced reference in Velilla's trouser catalogue and the only one with audited recycled material. The main fabric is 91% GRS-certified recycled nylon and 9% spandex, 230 g/m², reinforced with 320 g/m² ripstop in critical areas. It repels water, does not crease, has shape memory and certified UPF 50+ sun protection according to EN 13758-2.
✅ Features
GRS (Global Recycled Standard) certificate: not a manufacturer's claim, but a third-party certification that audits the traceability of the recycled material throughout the supply chain, together with social and environmental production criteria. It is a scoring point in public tenders and in specifications with green procurement criteria.
91% recycled nylon: the fibre comes from recovered waste, not virgin nylon.
320 g/m² ripstop reinforcement: tear-resistant fabric (90% nylon - 10% spandex) in the most demanding areas.
4-way stretch and shape memory: stretches in all directions and returns to its shape.
Water-repellent and breathable: repels splashes without blocking vapour.
UPF 50+ according to EN 13758-2: blocks more than 98% of ultraviolet radiation; relevant for days in the sun.
Crease-resistant and abrasion-resistant.
Reflective details on belt loops and other areas for additional visibility.
3D hook-and-loop hems: adjust the hem width without alterations.
👷 Suitable for
Installation and maintenance of renewable energy systems, with long hours in the sun.
High-level technical service and industrial after-sales.
Civil engineering and infrastructure in tenders with environmental criteria.
Telecommunications and work at height.
Companies with a sustainable procurement policy that need to justify the material.
📋 Technical data
Velilla reference: 103035X
Range: 4-Xtreme Max (Velilla's technical line, not a fabric type)
Fastening: front zip and custom water-repellent button
Waistband: ergonomic elasticated back, wide belt loops with reflective details and asymmetric rear belt loop
Reinforced rear yoke with triple safety stitching
Pockets: 2 slanted front + patch pocket on left leg with heat-sealed zip + patch pocket on right leg with flap and tool compartment + inner rear pocket with heat-sealed zip
Hems: adjustable with 3D hook-and-loop
Sizes: S, M, L, XL, 2XL and 3XL
Colours: black/black, dark navy/black and mineral grey/black
🧺 Care
Machine wash at low temperature.
No fabric softener: it cancels the water-repellent finish.
Do not bleach or dry clean; spandex degrades.
Air dry and iron at low temperature if needed (the fabric is crease-resistant).
💡 Tip: if you are bidding on a tender with environmental criteria, keep the GRS certificate for the batch, not just the product sheet. GRS certifies chain of custody and is issued per production batch: a tender committee may request the document with the certificate number and scope, and the commercial sheet alone proves nothing.
Frequently Asked Questions
What is the GRS certificate?
The Global Recycled Standard is a third-party certification that audits the traceability of the recycled material throughout the supply chain, as well as social and environmental production criteria.
Does GRS count for points in a public tender?
Yes, in specifications with environmental criteria. It is advisable to keep the batch certificate, not just the commercial sheet.
What is 4-Xtreme?
It is a technical range from Velilla, not a type of fabric. 4-Xtreme Max is its top level.
What does UPF 50+ mean?
That the fabric blocks more than 98% of ultraviolet radiation, according to standard EN 13758-2.
Is it waterproof?
No. It is water-repellent: it repels splashes, but it is not rainwear.
